A severe thunderstorm warning has been issued for the southwest part of Genesee County until 6 p.m.
The storm is capable of producing quarter-sized hail and winds in excess of 60 mph.
The storm is moving northeast at about 30 mph.
Rainy weather has also forced the Batavia Muckdogs to postpone tonight's came at Dwyer Stadium. The game will be made up as part of a doubleheader Tuesday.
UPDATE: A flash-flood warning has been issued for eastern Genesee County, including Batavia. Already as much as of two inches of rain has fallen, according to the National Weather Service. Heavy rain is expected to continue. The warning is in effect until 9 p.m.